Xtykutl

I've managed to store the data of the content in the Firebase database. However, the items are not showing up on the recyclerView at all. I think it might be an issue with my loadData() section as I've ran into some issues regarding adapter must be declared abstract, previously. However, I modified the code already.

DiaryActivity.java

package com.shiminu1521462c.fyp_2;



import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;

import androidx.appcompat.widget.Toolbar;

import androidx.recyclerview.widget.GridLayoutManager;

import androidx.recyclerview.widget.RecyclerView;



import android.content.Context;

import android.content.Intent;

import android.content.res.Resources;

import android.os.Bundle;

import android.util.TypedValue;

import android.view.LayoutInflater;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Toast;



import com.firebase.ui.database.FirebaseRecyclerAdapter;

import com.firebase.ui.database.FirebaseRecyclerOptions;

import com.google.firebase.auth.FirebaseAuth;

import com.google.firebase.database.DataSnapshot;

import com.google.firebase.database.DatabaseError;

import com.google.firebase.database.DatabaseReference;

import com.google.firebase.database.FirebaseDatabase;

import com.google.firebase.database.Query;

import com.google.firebase.database.ValueEventListener;



public class DiaryActivity extends AppCompatActivity {



    private FirebaseAuth mAuth;

    private DatabaseReference fNotesDatabase;



    private RecyclerView mNotesList;

    private GridLayoutManager gridLayoutManager;

    private DatabaseReference noteRef;

    private Toolbar mToolbar;





    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_diary);



        mToolbar = (Toolbar) findViewById(R.id.main_chat_toolbar);

        setSupportActionBar(mToolbar);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        getSupportActionBar().setTitle("Diary");



        mNotesList = (RecyclerView) findViewById(R.id.notes_list);

        gridLayoutManager = new GridLayoutManager(this, 2, GridLayoutManager.VERTICAL, false);



        mNotesList.setHasFixedSize(true);

        mNotesList.setLayoutManager(gridLayoutManager);

        mNotesList.addItemDecoration(new GridSpacingDecoration(2, dpToPx(10), true));





        mAuth = FirebaseAuth.getInstance();

        if (mAuth.getCurrentUser() != null) {

            fNotesDatabase = FirebaseDatabase.getInstance().getReference().child("Notes").child(mAuth.getCurrentUser().getUid());

        }

        loadData();

    }



    @Override

    public void onStart() {

        super.onStart();



    }





    private void loadData() {

        FirebaseRecyclerOptions options =

                new FirebaseRecyclerOptions.Builder<NoteModel>()

                        .setQuery(fNotesDatabase, NoteModel.class)

                        .build();

        FirebaseRecyclerAdapter<NoteModel, NoteViewHolder> adapter

                = new FirebaseRecyclerAdapter<NoteModel, NoteViewHolder>(options) {



            @Override

            protected void onBindViewHolder(@NonNull final NoteViewHolder viewHolder, int position, @NonNull NoteModel model) {



                final String noteId = getRef(position).getKey();



                fNotesDatabase.child(noteId).addValueEventListener(new ValueEventListener() {

                    @Override

                    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {



                        if (dataSnapshot.hasChild("title") && dataSnapshot.hasChild("timestamp")) {



                            String title = dataSnapshot.child("title").getValue().toString();

                            String timestamp = dataSnapshot.child("timestamp").getValue().toString();



                            viewHolder.setNoteTitle(title);

                            //viewHolder.setNoteTime(timestamp);



                            GetTimeAgo getTimeAgo = new GetTimeAgo();

                            viewHolder.setNoteTime(getTimeAgo.getTimeAgo(Long.parseLong(timestamp), getApplicationContext()));



                            viewHolder.noteCard.setOnClickListener(new View.OnClickListener() {

                                @Override

                                public void onClick(View view) {

                                    Intent intent = new Intent(DiaryActivity.this, DiaryNewNoteActivity.class);

                                    intent.putExtra("noteId", noteId);

                                    startActivity(intent);

                                }

                            });

                        }

                    }



                    @Override

                    public void onCancelled(@NonNull DatabaseError databaseError) {

                    }

                });

            }

            @NonNull

            @Override

            public NoteViewHolder onCreateViewHolder(@NonNull ViewGroup viewHolder, int i) {



                View view = LayoutInflater.from(viewHolder.getContext()).inflate(R.layout.activity_diary, viewHolder, false);

                NoteViewHolder viewHolder1 = new NoteViewHolder(view);

                return viewHolder1;

            }

        };

        mNotesList.setAdapter(adapter);

    }







            @Override

            public boolean onCreateOptionsMenu(Menu menu) {

                super.onCreateOptionsMenu(menu);



                getMenuInflater().inflate(R.menu.diary_menu, menu);



                return true;

            }



            @Override

            public boolean onOptionsItemSelected(MenuItem item) {

                super.onOptionsItemSelected(item);



                switch (item.getItemId()) {

                    case R.id.diary_new_note_btn:

                        Intent newIntent = new Intent(DiaryActivity.this, DiaryNewNoteActivity.class);

                        startActivity(newIntent);

                        break;



                    case android.R.id.home:

                        Intent myIntent = new Intent(DiaryActivity.this, DashboardActivity.class);

                        startActivity(myIntent);

                        break;

                }



                return true;

            }





            /**

             * Converting dp to pixel

             */

            private int dpToPx(int dp) {

                Resources r = getResources();

                return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics()));

            }

        }

Note.java

package com.shiminu1521462c.fyp_2;



import com.google.firebase.database.Exclude;



public class Note {

    private String documentId;

    private String title;

    private String description;

    private int priority;



    public Note(){

        //public no-arg constructor needed

    }



    public Note(String title, String description, int priority){

        this.title = title;

        this.description = description;

        this.priority = priority;

    }



    @Exclude

    public String getDocumentId() {

        return documentId;

    }



    public void setDocumentId(String documentId) {

        this.documentId = documentId;

    }



    public String getTitle(){

        return title;

    }



    public String getDescription(){

        return description;

    }



    public int getPriority() {

        return priority;

    }



    public void setPriority(int priority) {

        this.priority = priority;

    }

}

NoteModel.java

package com.shiminu1521462c.fyp_2;



public class NoteModel {

    public String noteTitle;

    public String noteTime;



    public NoteModel() {



    }



    public NoteModel(String noteTitle, String noteTime) {

        this.noteTitle = noteTitle;

        this.noteTime = noteTime;

    }



    public String getNoteTitle() {

        return noteTitle;

    }



    public void setNoteTitle(String noteTitle) {

        this.noteTitle = noteTitle;

    }



    public String getNoteTime() {

        return noteTime;

    }



    public void setNoteTime(String noteTime) {

        this.noteTime = noteTime;

    }

}

NoteViewHolder.java

package com.shiminu1521462c.fyp_2;



import android.view.View;

import android.widget.TextView;





import androidx.cardview.widget.CardView;

import androidx.recyclerview.widget.RecyclerView;



public class NoteViewHolder extends RecyclerView.ViewHolder {



    View mView;



    TextView textTitle, textTime;

    CardView noteCard;



    public NoteViewHolder(View itemView) {

        super(itemView);



        mView = itemView;



        textTitle = mView.findViewById(R.id.note_title);

        textTime = mView.findViewById(R.id.note_time);

        noteCard = mView.findViewById(R.id.note_card);



    }



    public void setNoteTitle(String title) {

        textTitle.setText(title);

    }



    public void setNoteTime(String time) {

        textTime.setText(time);

    }



}

activity_diary.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

    xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@drawable/background"

    tools:context=".DiaryActivity">



    <androidx.appcompat.widget.Toolbar

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/main_chat_toolbar"

        android:background="@color/colorPrimary"

        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    </androidx.appcompat.widget.Toolbar>



    <androidx.recyclerview.widget.RecyclerView

        android:id="@+id/notes_list"

        android:layout_below="@id/main_chat_toolbar"

        android:layout_width="match_parent"

        android:layout_height="wrap_content">

    </androidx.recyclerview.widget.RecyclerView>





</RelativeLayout>

single_note_layout.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    android:orientation="horizontal"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:minWidth="156dp">



    <androidx.cardview.widget.CardView

        android:id="@+id/note_card"

        android:layout_width="match_parent"

        android:layout_height="128dp"

        android:layout_margin="5dp"

        android:clickable="true"

        android:focusable="true"

        android:maxHeight="128dp"

        android:minHeight="128dp"

        app:contentPadding="5dp">



        <LinearLayout

            android:layout_width="156dp"

            android:layout_height="match_parent"

            android:minWidth="156dp"

            android:orientation="vertical">



            <TextView

                android:id="@+id/note_title"

                android:layout_width="156dp"

                android:layout_height="0dp"

                android:layout_marginBottom="10dp"

                android:layout_weight="1"

                android:ellipsize="end"

                android:maxLines="5"

                android:text="Note Title"

                />



            <TextView

                android:id="@+id/note_time"

                android:layout_width="match_parent"

                android:layout_height="wrap_content"

                android:ellipsize="end"

                android:maxLines="1"

                android:text="Updated time"

                android:textSize="12sp" />

        </LinearLayout>



    </androidx.cardview.widget.CardView>



</LinearLayout>